v3.26.1
Business Combinations (Narrative) (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Apr. 05, 2026
USD ($)
employees
Jul. 05, 2026
USD ($)
Dec. 28, 2025
USD ($)
Jun. 29, 2025
USD ($)
Mar. 30, 2025
USD ($)
Dec. 29, 2024
USD ($)
Business Combination [Line Items]            
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value $ 25,011 $ 15,442 $ 17,869 $ 21,090 $ 19,740 $ 21,753
Goodwill   6,607,802 6,613,493      
Goodwill, Acquisition   31,814        
Advanced Chemistry Development Inc. [Member]            
Business Combination [Line Items]            
Business Combination, Number Of Employees Acquired | employees 200          
Life Sciences [Member]            
Business Combination [Line Items]            
Goodwill   4,749,859 4,744,962      
Goodwill, Acquisition   31,814        
Life Sciences [Member] | Advanced Chemistry Development Inc. [Member]            
Business Combination [Line Items]            
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 11 years 3 months 18 days          
Goodwill, Acquisition   31,800        
Diagnostics [Member]            
Business Combination [Line Items]            
Goodwill   1,857,943 $ 1,868,531      
Goodwill, Acquisition   0        
Customer Relationships [Member] | Life Sciences [Member] | Advanced Chemistry Development Inc. [Member]            
Business Combination [Line Items]            
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived $ 18,200          
Trademarks and Trade Names [Member] | Life Sciences [Member] | Advanced Chemistry Development Inc. [Member]            
Business Combination [Line Items]            
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived 800          
Backlog [Member] | Life Sciences [Member] | Advanced Chemistry Development Inc. [Member]            
Business Combination [Line Items]            
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived 1,100          
Developed Technology [Member] | Life Sciences [Member] | Advanced Chemistry Development Inc. [Member]            
Business Combination [Line Items]            
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived 30,100          
United States of America, Dollars | Advanced Chemistry Development Inc. [Member]            
Business Combination [Line Items]            
Business Acquisition, Cost of Acquired Entity, Cash Paid Including Working Capital And Other Adjustments $ 72,000          
Business Combination, Contingent Consideration, Liability   $ 8,000